2012/1/27 Kevin Keane (subscriptions) <subscript...@kkeane.com>: > A VSS backup and system state are *not* equivalent. In my mind, trying to > back up Windows with plain VSS snapshots is not much better than not having > any backups. > > > > Conceptually, the system state backup is two things: a predefined file set, > and a mechanism to do snapshot it. But that's only the top of the ice berg; > the devil is in the detail. > > > > First of all, VSS applies only to one drive. The system state can extend > over several drives (most commonly if you chose to follow Microsoft's > recommendations and put the log files for the various database on a > different physical drive from the database itself). > > > > Second, there is no guarantee that restoring Windows in bits and pieces will > work. When restoring the registry, you may end up with something that > doesn't match any Windows updates made since the backup was taken. > Basically, if you do a VSS snapshot to back up those things, you are > manually redoing what Microsoft already did for you, and then you hope that > you selected the right files so that a restore will later work. Sometimes it > does, sometimes it doesn't > > > > And in any case - how are you going to restore just the registry? You can't > do it from within Windows, because the files are always in use. So you have > to use something like BartPE. What about file permissions for the registry > files? The system state does allof that for you. > > > > Active Directory is special even within the system state. You can restore it > in three different ways: > > > > - Simply restoring the system state. That is usually recommended. It will > give you a non-authoritative version of AD. It is joined to the domain, but > the data is not accurate. It will then try and replicate the data from other > domain controllers. The end result is that AD is completely up to date with > the latest changes. > > > > - Restoring the system state in directory restore mode. That will give you > an authoritative version of AD. This will roll back AD to the time of the > backup. Only do it if you don't have other AD controllers to replicate data > from. > > > > - demote the DC, remove it from the domain, rejoin and then re-promote it. > This is necessary if you had to seize any of the FSMO roles onto another AD > controller. > > > > - rebuild the domain from scratch. > > > > -----Original message----- > > > From: Simone Caronni <negativ...@gmail.com> > Sent: Wed 25-01-2012 07:38 > Subject: Re: [Bacula-users] Windows File Daemon: "VSS" or "System State" or > both ? > To: bacula-users <bacula-users@lists.sourceforge.net>; > Hello, > > I used to do one of the following depending on whether is Windows 2003 > or 2008+ to have some additional protection: > > ClientRunBeforeJob = "start /w ntbackup backup systemstate /F > C:\\SystemState.bkf" > ClientRunAfterJob = "del C:\\SystemState.bkf" > > ClientRunBeforeJob = "start /w wbadmin start systemstatebackup > -backuptarget:D: -quiet" > ClientRunAfterJob = "rmdir /s /q D:\\WindowsImageBackup" > > But if you run with VSS enabled you're able to back up also registry > and open files, so unless you have a strict requirement to restore > only a part of the "System State" I suggest you to use only VSS. > > I made many restore of complete Windows systems with BartPE and the > bacula plugin. The only thing you will see is "shutdown unexpected" > when you reboot the restored system. > > >From my experiences, Active Directory domain controllers are a LOT > easier and faster to be replicated from another instance than to be > restored from scratch. > > Regards, > --Simone > > > > On 25 January 2012 11:48, Hugo Letemplier <hugo.let...@gmail.com> wrote: >> Hello, >> >> I am backing up Windows servers. >> >> I have a doubt on my file set. I run backups with VSS enabled and I >> run NTBackup to make a dump of the System State. >> >> This is recommended on the Bacula documentation but with both the VSS >> enabled and the NTBackup System state backup, have we got a redundancy >> of information ? >> >> Thank you >> >> Hugo >> >> >> ------------------------------------------------------------------------------ >> Keep Your Developer Skills Current with LearnDevNow! >> The most comprehensive online learning library for Microsoft developers >> is just $99.99! 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Ok, so I will keep the NTbackup system state Thanks ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
